US Patent: 1,606,972
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| Chuck
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Patentee:
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| Holger Nielsen (exact or similar names) - Lawton, MI |
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Patent Dates:
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| Applied: |
Jan. 02, 1926 |
| Granted: |
Nov. 16, 1926 |
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Jeff Joslin
Vintage Machinery entry for Nielsen-Barton Chuck & Tool Co,
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Description: |
| "My improved chuck is especially designed by me for use in tapping machines where there has been a very great loss in breakage owing to the taps not being securely held and not properly aligned..." |
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